Fourdrinier machine



July 28, 1931.

.1. A. WHITE FOURDRINIER MACHINE Filed Nov, 20- 1930 4 sheets-sheet [dMm@ July 2s, 1931. 'J. A. WHITE' 1,816,754

` FOURDRINIER MACHINE Filed Nov. 20, 1930 4 Sheets-Sheet 2 July 28,1931. J. A. WHITE I FOURDRINIER MACHINE v Filed Nov. 20 1950 4Sheets-Sheet 3 ay 28, 1931. l J.YA. wHaTE- l1,836,754

FOURDRINI ER MACHI NE y Filed Nov; 20- 1930 4 sheets-sheet 4 PatentedJuly 28, 1931 lJosEIiII A'rwoon WHITE, on MELROSE PARK,

PENNSYLVANIA, AssIeNoR 'ro THE .IVIORE & WHITE COMPANY, 0F PHILADELPHIA,PENNSYLVANIA, A CORPORA- TION 0F PENNSYLVANIA FOURDRINIER MACHINEApplication led November 20, 1930. Serial No. 497,039.`

My invention relates to certain improvements in paper-making machines ofthe F ourdrinier type.I

One object of the invention is to improve and simplify the constructionof a Fourdrinier paper-making machine so that the paper. making sectionoit'l the machine can be readily adjusted at two points, one point atthe breast' roll and thev other point between the making section and thesuctionbox section.

Y Another object 'of the invention is to make the machine in twosections, in which the delivery end of the paper-making .section issupported by the suction box section.

A furtherobject of'thelinvention is to provide rockers at the breastroll end of the machine supported on one .of the beams of the frame ofthe machine, and rockersat the de livery end of the paper-makingsectionsupported by the suction boit section.

A still further object of the inventionis to make the supporting framesAfor the machine in the form of heavy castings, each casting having adeep throatfthrou'gh which the return run of the wire extends.-v

A further object'ot the invention is to so design the framesgthat theycan be mounted on the ordinary foundations ot a Fourdrinier machine.

A still further object of the invention is to preventy thel spring orwhipping of the side rails of the machine.

And a still further object of the invention Vis to so construct -theshakingr mechanism that the movement of one end of the table can be of adiii'erent length than at the opposite end of the table.

kA Ifurther.object of the invention is to pro- 'vide a seriesor: shakingmechanism for shaking the paper-making section of the frame, and toprovide means for adjusting the shaking mechanism so as to regulate theradial movement of the frame.

i In the accompanying drawings:

Figs. ll and la are side views of a Fourdrinier machine illustrating myinvention;

Fig. 2 is a plan view of one end and one side of the machine and,illustrating the shakingmechanism'g` l Fig. 3 is a transverse sectionalview on the line 3 3, Fig. l; v

F ig. 4 is a transverse sectional view on the 1in@ ir-4, Fig. ,1; i

Fig' is a transverse sectional view on the line 5 5, Fig. l; l

Fig. 6 is a detached perspective view of one ot the rocking elements atthe delivery end ot the paper-making section of the machine;

Fig. part of thesupporting cam and base plate of the rocker at thesuction' box end of the machine; and

Fig. 8 is a det-ached perspective view of one of the devices whichprevent longitudinal movement of the making frame.

l are the supporting beams for the machine. Three are shown in thepresent instance. These beams extend the full width ot' the machine andrest on the foundations a. ln the present instance, these foundationsmayy be the foundations of a standard machine so that if the improvedmachine is substituted for a machine of an older type, the originalfoundations can be used. Each supporting beam is made in the form of asingle hollow casting having upper members 7 is a detached perspectiveview oi."

2 and lower members 3. These members are connected at one end only by avertical member 4, and the upper and lower beams are spaced apart toform an extended throat 5, which is deep enough to allow the return runof the forming wire 6 to pass therethrough as shown/ clearly in Fig. 3.When the machine is running, the outer end of the upper o'verhangingsection 2 is supported on the outer end of the lower section 3 by ablock 7, tion from vibrating, but when it is wished to change the wire,this .block is removed ,and there is suiiicient strength in thestructure to allow the overhanging portions 2 of the beams to supportthe load.l The beams are connected by longitudinal side members 8 and 9,Jforming a heavy rigid structure for supporting the machine.

10 is a breast roll. the trunnions 11 of which are mounted in hearings12, secured to the side rails-13 of the making section of the machinewhich carries the rollers 14, over which the making wire 6 travels,these side bars and connections forming the carrying frame for the wire.The frame is supported at the'breast roll end by rockers 15,. Therockers consist of two pairs of wooden blocks 16, spaced apart, and eachrocker is slightly rounded a't the upper and lower end shown in Fig. 6,and the rockers are supported on edge by a base plate 19, Figs. 4 and 7,having a semi-circular bearing 18 which rests on the cams 20, on acam-shaft rails 13 ofthe paper-making section of the machine. The objectof this adjustment is to raise or flower the feed end of the papermakingsection of the machine. The opposite end of the wire supporting frame iscarried by the suction box frame 26, which has a portion 27 whichextends under the making wire frame and forms the base support forrocking blocks 28. similar in construction to the blocks 16. The upperends of the blocks Q8 are mounted in cap plates 29 secured to the sidebars 13 of the making wire frame.

ln order to adjust the suction box frame 9.6,

a hea Vy screw 3() is pivoted at 31 to the arched portion of theextension 27 of the frame, and this screw' extends through a nut 32supportedby the intermediate beam l, and on the periphery of each nutare teeth which are engaged by a worm33 on a shaft 34 extending i acrossthe. machine and mounted on the `vsupport l. and this shaft is turned bya handwhee 35. so that on turning the lhand-wheel the forward portion ofthe suction box frame can be raised and this in turn raises the outerportion ofthe making wire frame. tlierwise the two frames are entirelyindependent one from the other. The outer end of the suction boxI frameis pivoted at 3G, the pivot being adapted` to suitable bearings 37 onthe side members 9. 38 are the suction boxes of the ordinary type, and39 are supporting rollers for the wire. i i

`ln order to prevent the longitudinal movement of the making frame, aflexible connecltion 71, Fig. 8. `is provided at each sideof themachine.

T2 connected at 73 to the n'iaking frame and to a bracket 74 on a block75 mounted on the forward transverse member of the main y Each flexiblemechanism con-- .slsts 1n the present instance of a fiat spring barframe, so thatwhile the making frame kis i therockers 16 are removedfrom under the bearings of the breast roll, the shoes 7 6 will -restupon the blocks 75 of the mainframe and support the forward end of themaking frame when the making wire is to be removed and a new wire placedin position.

At the delivery end of the machine is va couch roll 40, around which themaking wire 6 passes. This couch roll in the present instance can beadjusted towards and from the supporting beam by means of screws 41mounted in the beam 1, and each screw engages a sliding bearing 42,which supports the roll 40. Each bearing slides on a base plate 43, andthe` screw hasa worm wheel 44 at one end meshing with the worm 45 on theshaft 46, which extends across the machine, and on which is a hand wheel47 by which it is turned. 0n each bearing 42 is a pivoted bolt 48, whichwhen the roller is moved to a position close to the beam 1, can beturned up to engage a slotted bracket 49 on thebeam 1,

so that the base portion of the bearing 42 can be removed', allowing thecouch roll to hang from the brackets. AThe return run of the making wire6 is supported on adjustable carrying rollers 50, which hold the wireagainst the bearing rollers 51, so that when the wire is in place theslack of the wire can be taken up by adjusting the rollers 50. rIhemeans for adjusting these rollers are of the well known `type and neednot be described, the rollers being shown simply in diagram. Whenit iswished to remove the wire, all that is necessary is to remove the blocks7 and lowerthe rollers 50, and adjust the co'uch roll bearings so thatthe couch roll will be moved toward the'frame at the delivery end of themachine. This allows sufficient slack in the making wire so' that it canbe removed laterally from the machine and another wire placed inposition` after which the several parts are reassembled and the slack inthe wire taken up.

The means for shaking the making frame of the paper-making machine isas' follows:

Above the block is a shoe/ 52 are three shaking stands in the present finstance. `These stands are mounted en a base 53 and they are spacedapart as shown, so that one stand will shake thev stand near the breastroll, and the second stand will shake the middle of the frame, and thethirdk shaft 6, mounted in suitable bearings 57.

gis

These bearings are mounted on the several stands. On the shaft areeccentrics 58, one located at each shake stand, and each eccentricactuates a rod 60, which in turn vibrates -a forked lever 61, which isconnected to the side frame of thevpaper-making section of the machineby a pin 62, which is adapted to bearings 63. In order to vary thevibration of the frame of the making section of the machine, a disk Gaismounted in each stand as shown, and this disk has a slot therein, inwhich is ablock 66 having a pin 67, which engages the forked end ofthelever 61. This disk can be turned in its bearings in the stand by ascrew 68. On this screw is a block 69,

which is engaged by a lug 70 on the disk, so that when the screw isturned, the disk is turned in its bearings, and the position of theblock 66 is altered. As the levers are fulcrumed on the pin 67, theposition of the slots will vary the longitudinal movement ofthe leverswhich impart the shaking motion to the frame of the paper-making sectionof the machine. The outer ends, offthe levers 6l will give a verticalmovement by'the eccen tries -58, through the rod 60, so that by thismeans the eccentricsfare all set alike on the shaft 56, and the verticalmovement of the three levers is the same. By adjusting the disks of eachstand so that the slots therein will be at different angles, thevibrator-y movement imparted by the mechanism can be varied'at eachstand independently. As an example, the shaft 56 rotates from v20() to500 revolutions per minute and the stroke of the lever 61 nearest theVbreast` roll is about 578, while the strokeofthe lever at theintermediate stand is 1, and the stroke of the lever nearest thedelivery end of the making section is about l/g'", through which apositive vibratory motion is imparted to the frame, and there is agreater movement at the breast roll than at. the delivery end of thepaper-making section. By the above de scription it will, be seen thatthev making section and suction box section of the machine are firmlysupported on heavy beams, which are connected together, and that themaking section' ofthe machine is independent of the Asuction boxsection, and can be vibrated to, any'desired extent without interferingwith the suction box section, and the breast roll end of the machine canbe raised and lowered independently of the delivery end, and thedelivery end is raised and lowered with the suction box section. Theparts are so'proportioned that by simply retracting the couch roll anddropping the tension rolls 50, there is enough slack provided in thewire toallow for the removal of one endless wire and substituting a newwire therefor, and as the making section of the machine is supported onvertically arranged blocks, preferably of wood, and rounded at theirends, the making section of the machine can be shaken accurately and byproviding' the three shaking stands any amount of lateral motion can begiven the carrying fraaie of the making scction of the machine. Theadjusting means are so arranged that adjustments can be made while themachine is running and tbc shaking mechanism can also be adjusted whilethe machine is running. lVhilc I have i1lus trated a preferredconstruction, in which three shaking stands are provided, it will beunderstood that two stands may be used in some instances, or more thanthree if dcsirable.

I claim:

l. The combination in a paper-making machine of the Fourdiinier type, ofsupport- ,ing beams extending .from one side of the machine to theother, each supporting beam having upper and lower members, connected atone end only, to form an elongated throat for the return run of themaking wire; longitudinal side members connecting the several supportingbeams; and a making frame mounted above the base frame formed by thebeams and longitudinal side members.

2. The combination in a paper-making machine, of the Fourdrinier type,of a series of transverse supporting beams having upper and lowersections, connected at one end onlv,

and forming 'an elongated throat for the return run of themaking wire;longitudinal side members connecting the several supporting beams; ayremovable block supporting the upper member at the open end of thethroat; paper-making frames mounted on the beams; means for vibratingthe `making section of the frames; and means attached to one of thebeams and making frames, preventing longitudinal movement of the frame.

3. The combination in a paper-making machine of the Fourdrinier type, ofa base frame; a making frame mounted above the base frame and havingrockers; a suction box frame having suction boxes thereon, the suctionframe extending under the forward delivery end of thef making frame andsupporting the delivery end of said making frame; a breast roll on themaking frame; a couch roll; and an endless wire extending over themaking frame and suction box frame, and returning under said frames.

t. The `combination of a base frame made up of a series of transversesupporting beams, each beam having an elongated throat for the returnwire: longitudinal side members connecting the beams; a making framemounted above the forward end of said frame; a breast roll carried bythe making frame; rockers supporting the frame near the breast roll;means for removably holding the rockers in position; a suction box framepivoted to the main frame at the delivery end, and the forward end ol'said frame extending IUU lll)

under thedelivery. end of the making frame;

rockers between the extension of the suction box frame and the deliveryend of the makin frame; a` couch roll at the delivery end o the machine;and an endless wire extending around the breast roll and over the makingframe and suction box frame, and around the couch roll, returningthroughthethroats,

of the transverse supporting beams.

5. The combination in a Fourdrinier paper-making machine, of a makingframe having a series of rollers thereon; a 4suction the forward endY ofthe suction a breast rolll at' the" forward end ot the box frameindependent of the making frame; a couch roll at the forward end of themaking frame; rockers mounted between the baseb frame andthe-makingframe near the couch roll; and a' second set of' rockers mounted underthe delivery end of the making frame.

6. The combination in a Fourdrinier paper-making machine, of a makingframe; a suction box frameseparate fromlthe making frame and pivoted atthe delivery end; means for vertically adjusting the forward end of thesuction box frame; rockers supporting the delivery end of themaking)Aframe on ox frame;

making frame fand rockersmounted near the breast roll.

7. The combination in a Fourdrinier paper-making machine,.of a makingIframe.;

a breast roll at the forward end ofthe making frame; a suction box framewith suction boxes thereon; a base frame supporting Y both the makingframe and the suction box frame, said suction box trame being'pivoted vat the delivery end to the main frame.; means for vertically adjusting.the suction box vframe, said frame extending under the makin frame; arocker at each side ofA the machine supported by the suction box frameand supportmg the delivery end of the making frame; rockersunder theframe near the vbreast roll; exible means connecting the making frame;means for vertically adjustingthe suction box frame;- rockers on theforw'a.r iend of the suction box frame and supporting the delivery end.of the making frame; adjustable'frockers supporting the ybreast roll endof the making'iframe; and

means :for supporting the making frame on the main frame when therockers at the breast 1 roll end of the machine are removed.

9. rlhe combination in a Fourdrinier paper-making machine, of a baseframe; a

making frame mounted above the base frame; a suction-box framepivotallymounted on t e main frame and extending under the delivery end of themaking frame; a pair of' wooden rockers mounted between the forward endof the suction box lframe and the making frame; and a pair of Woodenrockers mounted on each side of the machine at the breast roll end ofthe making frame.

10. rlhe combination inv rocking mechanism for Fourdrinier paper-makingmachines, of two wooden rockers placed side a driving shaft; eccentricson the shaftat' each stand; two sets of levers, one at one stand and theother at the other stand; an

eccentric rod actuated bythe eccentric of each stand and connected tothe outer end of its lever; and means on each stand for varying thelongitudinal movement ot the levers by which lateral vibrating motion is1mparted to the making section of the machine.

12. The combination ina base frame, of Y a making wire section mountedon the base frame; a series of rocker stands located at one side of themachine; an eccentric on each rocker stand; means for rotating saideccentrics; a lever extending from each lrocker stand to the makingsection of the machine; eccentric rods connecting the ecce'ntrics withthe outer ends of their levers; and means for varying the longitudinalmovement of each lever, sov that the vibratory movement at one end ofthe paper-making section of the machine will be different from that atthe opposite end of the said section.

13. The combination in a paper-making machine, of a base frame; a makingsection mounted on the 'base frame; three rocker stands located at one'side of the machine; an eccentricl at each rocker stand; means forrotating said eccentrics lin unison; a lever extending from each`shaking stand to the side of the making section of the machine; anadjustable disk mounted in each Fourdrinier stand, having a slottherein; a block mounted `in each slot, having a pin on which a lever ispivoted; an eccentric rod connecting the eccentric at each stand to theend of its lever; and means for adjusting each disk so as to var-y thelongitudinal movement of the several levers, so that the lateral shakingmovement of the makin frame will be greater at the feed end of the ramethan at the delivery .end thereof, the three levers imparting a'positive motion to the said frame.

14. The combination in a Fourdrinier machine, of a base frame; a makingframe mounted on the base frame; rockers supporting the making frame,whereby lateral movement of the frame is permitted; a shaking stand;levers extending from the stand to the making sec'tion of the machine;means for imparting a longitudinal movement to the levers to shake themaking frame on its rockers; and a strut extending from the base frameof the machine to the rocker stand, rigidly connecting the rocker standwith the base frame.

15. The combination of a base frame; a making frame mounted above thebase frame; two sets of rockers supportingthe said making frame; abreast roll at one .end of the making frame, the rockers at the breastroll consisting of vertically arranged blocks l0- cated at each side ofthe machine; base plates and cap plates, each lower block being mountedin a base plate and the upper ends `of the blocks being mounted in thecap plates secured to the making frame, the base plates having lsegmental recesses therein; a cam shaft extending across the machine;cams thereon adapted to the segmental recesses of the base plates, thebearings for the said shaft mounted on the base frame of the machine;and means for turning the shaft to raise and lower the base plates.

16. The combination of a base frame; a making wire section having abreast roll at one end; a suction box section; and two sets of rockers,one set of rockers at'the breastl roll end of the machine being mountedon the main frame, the other set of rockers being mounted on the suctionbox section of the machine, the rockers of each set being arranged inpairs.

17. The combination of a base' frame; a makin wire section having abreast roll at one en a suction box section; and two sets of rockers,one set of rockers at the breast roll end of the machine being mountedon the main frame, the other set of rockers being mounted on the suctionbox section of the machine, the rockers of each set being arranged inpairs, the rockers being rounded at the upper and lower ends and adaptedto rock in base plates and cap plates.

JOSEPH ATWOOD WHITE.

